On the Reliability of Interference-Limited Systems over UAV-to-Ground Channels with Shadowing

Uncrewed aerial vehicle (UAV)-based communications have been suggested as an essential enabling technology for beyond fifth-generation (5G) cellular networks. This has resulted in the proposal of novel channel models for UAV-to-ground connections, considering both multipath fading and shadowing phenomena. In this paper, novel mathematical formulas are derived to describe the probability density function, cumulative distribution function, and moment-generating function of the signal-to-interference ratio for an interference-limited system operating over UAV-to-ground channels. Subsequently, these expressions are verified and confirmed through Monte Carlo simulations. Index Terms-Uncrewed aerial vehicles (UAVs), co-channel interference, outage probability.